<i>Tetracladium nainitalense</i> sp. nov., a root endophyte from Kumaun Himalaya, India

Sati, S. C.; Arya, P.; Belwal, M.

doi:10.3852/08-192

Cited by 28 publications

(12 citation statements)

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“…It has also been associated with the endophytic lifestyle in metabarcoding studies, including studies of terrestrial plants from the high Arctic (35) and submerged aquatic plants in Norway (15). Tetracladium nainitalense which was isolated as endophyte of Eupatorium adenophorum (11), is most closely related to species isolated as aquatic hyphomycetes and has itself been isolated from foam in a stream (morphological identification (82)). It should be noted that Tetracladium species are found as endophytes even in non-stream, non-riparian habitats.…”

Section: Discussionmentioning

confidence: 99%

“…These features facilitate dispersal and colonization of new substrates (5-8). Less well known is that some aquatic hyphomycetes are dual niche (9) or multifunctional (10) species that differ in mode of nutrition or lifestyle in different environments, and are both decomposers of dead plant material in water (saprotrophs) and endobionts in terrestrial or aquatic plants (6, 9, 11-15). Although it has been known since at least 1939 (16) that some aquatic hyphomycetes could be isolated from terrestrial sources, these fungi are still intensively studied in their aquatic context due to their massive presence ecological importance, especially in streams.…”

Section: Introductionmentioning

confidence: 99%

“…These are the first species in the genus described from soil. However, it has been known since 1970 that Tetracladium could be isolated from terrestrial sources including sterilized roots ( T. marchalianum (21)) and one species, T. nainitalense , was described from endophytic isolates (11). Tetracladium -like fungi, fungi identified as Tetracladium based on ITS similarity without morphological information, are increasingly reported to be among the most frequently found and abundant taxa in culture and metagenomics based studies of soil fungi, rhizosphere fungi, and endophytes world-wide.…”

Section: Introductionmentioning

confidence: 99%

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Broad geographical and ecological diversity from similar genomic toolkits in the ascomycete genusTetracladium

Anderson

Marvanová

2020

Preprint

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18The ascomycete genus Tetracladium is best known for containing aquatic hyphomycetes, which are 19 important decomposers in stream food webs. However, some species of Tetracladium are thought 20 to be multifunctional and are also endobionts in plants. Suprisingly, Tetracladium sequences are 21 increasingly being reported from metagenomics and metabarcoding studies of both plants and soils 22 world-wide. It is not clear how these sequences are related to the described species and little is 23 known about the non-aquatic biology of these fungi. Here, the genomes of 24 Tetracladium strains, 24 including all described species, were sequenced and used to resolve relationships among taxa and to 25 improve our understanding of ecological and genomic diversity in this group. All genome-sequenced 26 Tetracladium fungi form a monophyletic group. Conspecific strains of T. furcatum from both aquatic 27 saprotrophic and endobiont lifestyles and a putative cold-adapted clade are identified. Analysis of 28 ITS sequences from water, soil, and plants from around the world reveals that multifunctionality 29 may be widespread through the genus. Further, frequent reports of these fungi from extreme 30 environments suggest they may have important but unknown roles in those ecosystems. Patterns of 31 predicted carbohydrate active enzymes (CAZyme) and secondary metabolites in the Tetracladium 32 genomes are more similar to each other than to other ascomycetes, regardless of ecology, 33 suggesting a strong role for phylogeny shaping genome content in the genus. Tetracladium genomes 34 are enriched for pectate lyase domains (including PL3-2), GH71 α-1,3-glucanase domains and CBM24 35 α-1,3-glucan/mutan binding modules, and both GH32 and CBM38, inulinase and inulin binding 36 modules. These results indicate that these fungi are well-suited to digesting pectate and pectin in 37 leaves when living as aquatic hyphomycetes, and inulin when living as root endobionts. Enrichment 38 for α-1,3-glucanase domains may be associated with interactions with biofilm forming 39 microorganisms in root and submerged leaf environments. 42 important decomposers in stream ecosystems. The group is polyphyletic, its members are classified 43 in various orders and families of Ascomycetes and Basidiomycetes. These fungi thrive on leaves and 44 other plant debris that enter streams and other water bodies from terrestrial plants. In the process, 45 carbon and nutrients from recalcitrant plant compounds, including cellulose and lignin, become 46 accessible to diverse consumers in the stream food web (reviewed in (1, 2)). Up to 99% of the carbon 47 in some streams enters as plant debris that is largely inaccessible to aquatic consumers without the 48 degradative activity of these fungi (3, 4). Aquatic hyphomycete adaptations to stream environments 49 include the production of asexual propagules (conidia) while under water. These spores are often 50 branched, typically tetraradiate, or sigmoid, readily detachable from the fungus (e.g. from 51 conidiophores) and passi...

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Broad geographical and ecological diversity from similar genomic toolkits in the ascomycete genusTetracladium

Anderson

Marvanová

2020

Preprint

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“…It is interesting to note that the root endophytes found in the present study belong to different group of fungi as Beltrania rhombica and Pestalotiopsis submersus belong to dematacious fungi while Helicomyces roseus and H. lumbricoides belong to helicosporous fungi and other represent to triradiate or tetraradiate conidial fungi. Earlier, these fungi have also been reported from submerged leaf litter in running freshwater bodies (Ingold, 1942;Marvanova, 1975;Sati et al, 1989Sati et al, , 1992Sati et al, , 2002a, Sati and Tiwari, 1993 a, b;Sridhar and Barlocher, 1992 (Sati and Belwal, 2005;Sati et al, 2006, Arya andSati, 2008;Sati et al, 2009). With the addition of these three new endophytes, the total record from Kumaun Himalayas, India, reached 29 species.…”

Section: Resultsmentioning

confidence: 85%

New root endophytic water borne conidial fungi from Kumaun Himalaya

Sati¹,

Pathak²

2017

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Waterborne conidial fungi occurring in living roots of healthy plant growing in the wet and ravine areas of Dogaon and Ramgarh, Nainital, Kumaun Himalayas (India) were isolated as root endophytes. A total of 15 species (Alatospora acuminata, Anguillospora longissima, Beltrania rhombica, Campylospora chaetocladia, Claviriopsis aquatica, Cylindrocarpon aquaticum, Flagellospora penicilloides, Helicomyces roseus, Helicosporium lumbricoides, Pleurophragmium sonum, Pestalotiopsis submersus, Seiridium sp., Setosynnema isthmosporum, Tetrachaetum elegans, and Tetracladium marchalianum) of endophytic aquatic fungus were recovered as root endophytes of various host plants. Three species, namely, H. lumbricoides, P. sonum, and S. isthomosporum isolated from the roots of pteridophytes and grasses were found as new root endophytes. Among the studied host plants, five plant species were also found as new hosts.

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“…After two years one more species was added to this named L. alabamensis (Sinclair &Jones 1979).Though a large number of aquatic hyphomycetes have been explored from different part of the world by various investigators (Alasoadura 1968;Descals & Webster 1982;Hudson & Ingold 1960;Ingold1975;Kuthubutheen 1987;Kuthubutheen et al 1992;Marvanova 1997;Nawawi 1975, Nilsson 1964Park 1974;Peterson 1962, Ranzoni 1953Tubaki 1957;Webster & Descals 1979), it is noteworthy that Sati and his coworkers also made a substantial contribution towards the aquatic hyphomycetes flora from Kumaun Himalaya, India (Sati et al 2009, Sati & Tiwari 1990, 1992, 1993, 1997Tiwari & Sati 1991, 1992. Kumaun Himalaya is located in the outer Central Himalaya 28º 44' to 30º 49' N Lat.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and distribution of Kumaun Himalayan aquatic hyphomycetes: Lemonniera

Sati¹

2014

Mycosphere

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Five species of aquatic hyphomycetes belonging to the genus Lemonniera (L. alabamensis, L. aquatica, L. cornuta, L. pseudofloscula and L. terestris) collected from different submerged leaf litter and water foam accumulated in fast flowing fresh water bodies of Kumaun Himalaya, (India) are described. The taxonomic description, occurrence and worldwide distribution of each recorded species along with a simplified key are also provided.

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Tetracladium nainitalense sp. nov., a root endophyte from Kumaun Himalaya, India

Cited by 28 publications

References 5 publications

Broad geographical and ecological diversity from similar genomic toolkits in the ascomycete genusTetracladium

Broad geographical and ecological diversity from similar genomic toolkits in the ascomycete genusTetracladium

New root endophytic water borne conidial fungi from Kumaun Himalaya

Occurrence and distribution of Kumaun Himalayan aquatic hyphomycetes: Lemonniera

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